/*
 * Copyright (c) 2020 - present, Inspur Genersoft Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.inspur.edp.bff.designtime.generator.core.rtgen.managergenerator.mgrImplclass.methodgenerators;

import com.inspur.edp.bff.designtime.generator.core.rtgen.managergenerator.mgrImplclass.FSMgrImplGenContext;
import com.inspur.edp.caf.generator.baseInfo.ParameterInfo;
import com.inspur.edp.caf.generator.baseInfo.TypeInfo;
import com.inspur.edp.caf.generator.method.ClassMethodGenerator;

import com.inspur.edp.cef.variable.api.manager.IVariableManager;
import org.eclipse.jdt.core.dom.Block;
import org.eclipse.jdt.core.dom.ClassInstanceCreation;
import org.eclipse.jdt.core.dom.Modifier;
import org.eclipse.jdt.core.dom.ReturnStatement;

import java.util.ArrayList;

//protected abstract IVariableManager CreateVariableManager();
public class CreateVariableManagerMethodGenerator extends ClassMethodGenerator
{
	private FSMgrImplGenContext mgrGenCtx;

	public CreateVariableManagerMethodGenerator(FSMgrImplGenContext mgrGenCtx)
	{
		this.mgrGenCtx = mgrGenCtx;
	}

    @Override
    protected Block buildMethodBody() {
        Block block=ast.newBlock();
        ReturnStatement returnStatement=ast.newReturnStatement();
        if(mgrGenCtx.getMgrGenContext().getFSGeneratorContext().getVmGenContext().getVarGenerateContext()==null
                ||mgrGenCtx.getMgrGenContext().getFSGeneratorContext().getVmGenContext().getVarGenerateContext().getCefCoreGenCtx().getVariableMgrType()==null)
        {
            returnStatement.setExpression(ast.newNullLiteral());
        }
        else
        {
            String mgrType = mgrGenCtx.getMgrGenContext().getFSGeneratorContext().getVmGenContext().getVarGenerateContext().getCefCoreGenCtx().getVariableMgrType().getClassName();
            if(mgrType==null||"".equals(mgrType))
                returnStatement.setExpression(ast.newNullLiteral());

            else
            {
                addImport(mgrGenCtx.getMgrGenContext().getFSGeneratorContext().getVmGenContext().getVarGenerateContext().getCefCoreGenCtx().getVariableMgrType().getFullName());
                ClassInstanceCreation classInstanceCreation =ast.newClassInstanceCreation();
                classInstanceCreation.setType(ast.newSimpleType(ast.newName(mgrType)));
                returnStatement.setExpression(classInstanceCreation);
            }
        }
        block.statements().add(returnStatement);
        return block;

    }

    @Override
    protected boolean getIsOverride() {
        return true;
    }

    @Override
    protected ArrayList<Modifier.ModifierKeyword> getAccessModifiers() {
        ArrayList<Modifier.ModifierKeyword> list =new ArrayList<>();
        list.add(Modifier.ModifierKeyword.PUBLIC_KEYWORD);
        return list;
    }

	@Override
	protected String getMethodName()
	{
		return "createVariableManager";
	}

    @Override
    protected ArrayList<ParameterInfo> getParameterCollection() {
        return null;
    }

    @Override
    protected TypeInfo getReturnType() {
	    addImport(IVariableManager.class.getTypeName());
        return new TypeInfo(IVariableManager.class);
    }
}
